Wearable Tactile Display Based on Thermal Expansion of Nichrome Wire

Kajimoto, Hiroyuki; Jones, Lynette A.

doi:10.1109/toh.2019.2912960

Cited by 18 publications

(8 citation statements)

References 29 publications

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“…Zhao et al developed a tactile display consisting of a range of small-shape memory alloy actuators [9]. Later, one of the authors of the present work developed a tactile display using nichrome wires to induce thermal expansion [10]. This tactile display had the capacity to provide a vibratory stimulus of up to 320 Hz.…”

Section: Introductionmentioning

confidence: 87%

Characterization of an Electrode-Type Tactile Display Using Electrical and Electrostatic Friction Stimuli

et al. 2021

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Unlike tactile displays that use mechanical actuators, electrode-type tactile displays can be easily integrated and miniaturized because they consist of electrodes and insulators. Electrical tactile displays only require electrodes and use an electric current to stimulate vibration or pressure. Likewise, electrostatic friction tactile displays also only require electrodes and an insulator and can induce changes in friction between the display and a fingerpad. We have developed a tactile display that integrates electrical and electrostatic friction stimulation owing to their affinity to microfabrication techniques. This tactile display can provide both pressure and friction at the same time. In this study, we presented an elongated bar shape via the tactile display to experimental participants. The experimental results showed that a tactile display employing multiple stimuli as opposed to a single stimulus can induce the perception of larger shapes.

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Section: Introductionmentioning

confidence: 87%

Characterization of an Electrode-Type Tactile Display Using Electrical and Electrostatic Friction Stimuli

et al. 2021

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“…Furthermore, to realize complex and sophisticated tactile feedback, high‐resolution actuator arrays have been demonstrated. [ 100–102 ] Vishniakou et al. reported the 8 × 8 electrostatic diaphragm actuator array made of an interpenetrating polymer elastomer network.…”

Section: Emerging Active Material‐based Tactile Sensing and Feedback Devicesmentioning

confidence: 99%

Recent Advances and Opportunities of Active Materials for Haptic Technologies in Virtual and Augmented Reality

Yang

Kim

Jin

et al. 2021

Adv Funct Materials

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Virtual reality and augmented reality (VR/AR) are evolving. The market demands and innovation efforts call for a shift in the key VR/AR technologies and engaging people virtually. Tele‐haptics with multimodal and bilateral interactions are emerging as the future of the VR/AR industry. By transmitting and receiving haptic sensations wirelessly, tele‐haptics allow human‐to‐human interactions beyond the traditional VR/AR interactions. The core technologies for tele‐haptics include multimodal tactile sensing and feedback based on highly advanced sensors and actuators. Recent developments of haptic innovations based on active materials show that active materials can significantly contribute to addressing the needs and challenges for the current and future VR/AR technologies. Thus, this paper intends to review the current status and opportunities of active material‐based haptic technology with a focus on VR/AR applications. It first provides an overview of the current VR/AR applications of active materials for haptic sensing and actuation. It then highlights the state‐of‐the‐art haptic interfaces that are relevant to the materials with an aim to provide perspectives on the role of active materials and their potential integration in haptic devices. This paper concludes with the perspective and outlook of immersive multimodal tele‐haptic interaction technologies.

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“…Tactile matrix displays are often used as vision substitution but can also be used as a tactile augmentation to a vision system similar to in VR and telerobotics applications. Tactile displays can be made from different forms of tactile actuators (tactors) such as solenoids [18,[20][21][22][23][24], piezoelectric [25][26][27][28], voice coil motors [29], shape memory polymer (SMP) [30], smart memory alloy (SMA) [31,32], stepper motor [33], and pneumatic [34,35]. The performance and effectiveness of teleoperation and immersive systems can be enhanced by cutaneous feedback that provides an effective way to simplify the design of a haptic wearable [6].…”

Section: Introductionmentioning

confidence: 99%

A Novel Untethered Hand Wearable with Fine-Grained Cutaneous Haptic Feedback

Abad

Reid

Ranasinghe

2022

Sensors

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During open surgery, a surgeon relies not only on the detailed view of the organ being operated upon and on being able to feel the fine details of this organ but also heavily relies on the combination of these two senses. In laparoscopic surgery, haptic feedback provides surgeons information on interaction forces between instrument and tissue. There have been many studies to mimic the haptic feedback in laparoscopic-related telerobotics studies to date. However, cutaneous feedback is mostly restricted or limited in haptic feedback-based minimally invasive studies. We argue that fine-grained information is needed in laparoscopic surgeries to study the details of the instrument’s end and can convey via cutaneous feedback. We propose an exoskeleton haptic hand wearable which consists of five 4 × 4 miniaturized fingertip actuators, 80 in total, to convey cutaneous feedback. The wearable is described as modular, lightweight, Bluetooth, and WiFi-enabled, and has a maximum power consumption of 830 mW. Software is developed to demonstrate rapid tactile actuation of edges; this allows the user to feel the contours in cutaneous feedback. Moreover, to demonstrate the idea as an object displayed on a flat monitor, initial tests were carried out in 2D. In the second phase, the wearable exoskeleton glove is then further developed to feel 3D virtual objects by using a virtual reality (VR) headset demonstrated by a VR environment. Two-dimensional and 3D objects were tested by our novel untethered haptic hand wearable. Our results show that untethered humans understand actuation in cutaneous feedback just in a single tapping with 92.22% accuracy. Our wearable has an average latency of 46.5 ms, which is much less than the 600 ms tolerable delay acceptable by a surgeon in teleoperation. Therefore, we suggest our untethered hand wearable to enhance multimodal perception in minimally invasive surgeries to naturally feel the immediate environments of the instruments.

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Wearable Tactile Display Based on Thermal Expansion of Nichrome Wire

Cited by 18 publications

References 29 publications

Characterization of an Electrode-Type Tactile Display Using Electrical and Electrostatic Friction Stimuli

Characterization of an Electrode-Type Tactile Display Using Electrical and Electrostatic Friction Stimuli

Recent Advances and Opportunities of Active Materials for Haptic Technologies in Virtual and Augmented Reality

A Novel Untethered Hand Wearable with Fine-Grained Cutaneous Haptic Feedback

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